1991 MITSUBISHI 3000GT stop start

37B44-WHEEL STEERING SYSTEM (4WS) -Service Adjustment ProceduresSERVICE ADJUSTMENT PROCEDURES
M37FKAH
BLEEDING,LJ(1) Bleed air from power steering system (Refer to GROUP
37A
- Service Adjustment Procedures.)
(2) Lift up the vehicle.
(3) Start the engine and let it idle.
(4) Loosen the bleeder screw on the left side of the control
valve and set the special tool to the bleeder screw.
(5) Turn the steering wheel all the way to the left, immediately
returning it half way back.
At this time confirm that air is discharged with the fluid.
(6) Repeat step (5) two or three times, then check to ensure
that all air has been bled from the system.
(7) Repeat steps (4) through (6) for the right side bleeder
sc,rew, turning the steering wheel to the right this time.
(8) Loosen the power cylinder bleeder screw and set the
special tool to the bleeder screw.
Caution
Loosen the bleeder screw about 30 to 45 degrees, andsecure it with the special tool (rotation prevention
metal fixtures) so as not to be loosened more.
(9) Start the engine, running the vehicle at an indicated speed
I/l1Iof about 70-80 km/h (43-50 mph) to circulate the fluid.
-13FOO13
Caution
When replenishing the fluid, take special care as all fourIwheels will be rotating.
Fluid level difference within
5 mm (.20 in.)
While
engineWhile engine isIS runningstopped13lJO13~(lO)Maintain an indicated speed of about 30-40 km/h (19-25
mph), turning the steering wheel all the way to both left and
right.
When the wheel is steered all the way in either direction,
pressure will rise and air will circulate inside the tube
(special tool). Check to ensure that this air is discharged into
the oil reservoir.
(1 l)Repeat step (10) several times until that all air in the system
has been bled.
(12)Ensure that the difference in the fluid levels when the
engine is running and when it is stopped are within 5 mm(.20 in.).
If the difference exceeds 5 mm
(.20 in.), there is still air in
the system and it must be bled again.
Caution
If air has not been completely bled from the system, the
pump will make a humming sound or an unusual noise ,,
will come from the flow control valve; this also
dcontributes to shortened pump life.
TSB Revision

55-12 HEATERS AND MANUAL AIR CONDITIONER - Service Adjustment Procedures
CHARGING SYSTEMAdaDtor valve
Vacuum meter20MOli
l-TSB IHold this conditron
for 5 minutes.
Gas leak check
is evident
1
/ Refrigerant charge1The refrigerant system must have been evacuated using the
previous procedure before charging.
Charge using only R-12 refrigerant. R-12 is available in bulk
tanks or small cans. Follow the safety precautions for handling
R-12 as listed in this group.
CHARGING THE REFRIGERANTCHARGING WITH SMALL CANS
Wh,en using disposable cans of this type, follow carefully the
can manufacturers instructions.
(1) Start up the vacuum pump.
Caution1. Do not use the compressor for evacuation.
2. Do not operate the compressor in the vacuum
condition; damage may occur.
(2) Evacuate to a vacuum reading of 100
kPa (89.5 psi) or
higher (approx. IO minutes).
(3) Turn back the high pressure side adaptor valve all the way
and close the service valve.
(4) Stop the vacuum pump and allow to stand for 5 minutes.
(5) Check for leaks. (Good if the vacuum is held.)
(6) Tighten the charge valve handle to puncture the service
can.(7) Open the charge valve to charge the system with re-
frigerant.
(8) When the refrigerant is no longer drawn in, turn back the
low pressure side adaptor valve handle all the way and
close the service valve.
(9)
Chack for gas leaks using a leak detector.
vision
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55-40FULL AUTO AIR CONDITIONER - Troubleshooting
FULL AUTO AIR CONDITIONER
TROUBLESHOOTINGM55ECAF
TROUBLESHOOTING PROCEDUREd
(1) Check that the air ducts and rods are not off.
(2) Check that connectors are properly connected and fuses are not blown.
(3) Using an analog voltmeter or multi-use tester, check diagnosis outputs. If failure code is being output,
check the failing system and repair as necessary. (Refer to Diagnosis Display Patterns and Codes on
P.55-55.)
(4) If the diagnosis outputs are normal, check for terminal voltage or continuity with a circuit tester accordingto the troubleshooting chart by symptom. (Refer to control unit terminal voltages on
P.55-45 - 52.)
(5) In carrying out the troubleshooting procedure, first look up the Troubleshooting Quick-Reference Chart toknow the inspection items and then start the
insoection orocedure detailed in the following pages.
(6) When checking components, be sure to disconnect the connectors first.
TROUBLESHOOTING QUICK-REFERENCE CHART
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Air conditioner does not
operate when the ignition
not raise even the air
conditioner is operating
(No’warm air coming out).
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3Interior temperature does
not lower even the air
conditioner is operating
(No cold air coming out).
4
Blower motor does not rotate.
5Blower motor does not stop
rotating.
06 Inside/outside-air selectordamper does not operate.
7Outlet selector damper does
not operate.
8Condenser fan does not
operate when the air
conditioner is activated.9 Air-conditioner graphic display
does not function correctly.
IO Set temperature returns to25°C (122°F) when the ignitionswitch is turned ON and OFF.
NOTE(1)
(2)0 indicates the component requiring inspection. (Numbers in 0 are the priority order.)
Use an analog voltmeter or multi-use tester to check the control unit.TSB Revision